| Base | Representation | |
|---|---|---|
| Binary (2) | — | |
| Octal (8) | — | |
| Decimal (10) | — | |
| Hexadecimal (16) | — |
How to use the Number Base Converter
- Select the base of the number you're entering (Decimal, Binary, Octal, or Hexadecimal).
- Type the number — the table updates instantly with all four representations.
- Click Copy next to any row to copy that value.
Binary, Octal, Decimal, Hexadecimal
Binary (base 2) uses only 0 and 1 — the native language of digital circuits. Octal (base 8) was historically used in Unix file permissions. Decimal (base 10) is the number system humans use. Hexadecimal (base 16) uses digits 0–9 and letters A–F. It is compact and widely used in memory addresses, color codes, and binary data representation.